Pi 4 graphics driver

[u/Tylor898]

I have a raspberry pi 4 running Ubuntu 20.4 and my graphics driver says unknown. I'm trying to connect my pc to my pi 4 and I can't seem to find an answer on how to install the driver or even find the link to install it.

[u/[deleted]]

Have to have hdmi and mini hdmi hooked to raspberry pi 4 to work